Portable detector for measuring movements of a person wearing the detector, and method

摘要

This detection device comprises processing means (6) for distinguishing the movements of a person wearing a detector due to an external activity from movements due to his physiological activity. Movement sensor signals (4, 5) are filtered in different ways. The external activity is estimated and a subtraction gives the results for the physiological activity. Special processing is done to take account of exceptional states of the activity, such as sudden movement variations. Results can also be improves by discerning the type of activity being performed by the wearer. Finally, it is advantageous if several different sensors measure movements in different directions and if the most important measurements are chosen.